Chain tensioning device of cylindrical jumbolter

Abstract

The invention belongs to the technical field of jumbolters, and particularly relates to a chain tensioning device of a cylindrical jumbolter, which comprises a fixed block, a movable block and a double-thread rod, the cylindrical jumbolter comprises a transmission chain, a sliding guide rod and a sliding seat; the sliding seat is slidably connected to the sliding guide rod in a sleeving manner; the fixed block is fixed on the outer side wall of the sliding seat; the transmission chain is parallel to the sliding guide rod and is connected with the movable block and the fixed block; the double-thread rod is provided with external threads opposite in thread direction and connected between the fixed block and the movable block so as to adjust the distance between the fixed block and the movable block, and therefore the transmission chain can be tensioned or loosened. According to the scheme, the chain tensioning device is simple in structure, has the advantage of being small and exquisite in structure, and meets the space use requirement for respective tensioning adjustment of chains on the basis that the structural strength is guaranteed; in addition, tensioning and loosening of the chain are controlled through the double threaded rods, operation is convenient, the operation difficulty is lowered, and the requirement for technicians is lowered.

Description

Technical Field

[0001] The invention belongs to the technical field of anchor drilling machines, and in particular relates to a chain tensioning device of a cylindrical anchor drilling machine. Background Art

[0002] When the anchor drill is working, the lifting and lowering of the drill rod often use chains for transmission. For example, the cylindrical anchor drill generally uses two sets of chains for transmission. In actual use, the tension of the two sets of chains will affect the stability of the drill rod during lifting and lowering. In the prior art, the two sets of chains can be adjusted by synchronous tensioning or separate tensioning. Separate tensioning is to adjust the tension of the two sets of chains separately, which puts higher requirements on the size of the chain tensioning device. However, when the size of the chain tensioning device is reduced, the components of the chain tensioning device tend to become thinner, making the components prone to deformation in long-term use.

[0003] Therefore, it is necessary to design a chain tensioning device with high structural strength, simple and compact structure. Summary of the invention

[0004] In order to solve the above problems existing in the prior art, the present invention provides a chain tensioning device for a cylindrical anchor drilling rig.

[0005] The technical solution adopted by the present invention is:

[0006] A chain tensioning device for a cylindrical anchor drilling machine comprises a fixed block, a movable block and a double-threaded rod;

[0007] The cylindrical anchor drilling machine comprises a transmission chain, a sliding guide rod and a sliding seat; the sliding seat is in a sleeve shape and can be slidably sleeved on the sliding guide rod;

[0008] The fixed block is fixed on the outer wall of the sliding seat; the transmission chain is parallel to the sliding guide rod, one end of the transmission chain is connected to the movable block, and the other end is connected to the fixed block; both ends of the double-threaded rod are provided with external threads with opposite thread directions, one end of the double-threaded rod is threadedly connected to the fixed block, and the other end is threadedly connected to the movable block; when the double-threaded rod is rotated, the distance between the fixed block and the movable block can be adjusted to tighten or loosen the transmission chain.

[0009] As an alternative or supplement to the chain tensioning device of the above-mentioned cylindrical anchor drilling rig: the movable block is provided with a second connector for connecting the transmission chain, and the fixed block is provided with a first connector for connecting the transmission chain; the first connector and the second connector are both located on the axis of the double threaded rod.

[0010] As an alternative or supplement to the chain tensioning device of the cylindrical anchor drilling machine mentioned above: the double threaded rod is parallel to the sliding direction of the sliding seat.

[0011] As an alternative or supplement to the chain tensioning device of the above-mentioned cylindrical anchor drilling rig: a groove is provided on the outer wall of the sliding seat, the groove is long and perpendicular to the sliding direction of the sliding seat; a protrusion is provided on the outer wall of the fixed block; when the sliding seat is connected to the fixed block, the protrusion engages with the groove.

[0012] As an alternative or supplement to the chain tensioning device of the above-mentioned cylindrical anchor drilling rig: the two ends of the double-threaded rod are respectively a positive thread end and a negative thread end, and the length of the positive thread end is greater than that of the negative thread end; a locking nut is provided on the outer sleeve of the positive thread end, and when the positive thread end is connected to the fixed block, the locking nut is pressed against the end face of the fixed block to lock the relative position of the double-threaded rod and the fixed block.

[0013] As an alternative or supplement to the chain tensioning device of the cylindrical anchor drilling rig: a locking screw is threadedly connected to the fixing block, the locking screw is perpendicular to the double-threaded rod, and the locking screw can tighten the positive thread end.

[0014] As an alternative or supplement to the chain tensioning device of the cylindrical anchor drilling rig: a locking screw is arranged on the movable block, the locking screw is perpendicular to the double-threaded rod, and the locking screw can be pressed against the reverse threaded end.

[0015] As an alternative or supplement to the chain tensioning device of the above-mentioned cylindrical anchor drilling rig: the cylindrical anchor drilling rig includes two sliding guide rods arranged in parallel with each other, each of which is provided with a sliding seat; and chain tensioning devices are provided on the relative inner sides of the two sliding seats.

[0016] The beneficial effects of the present invention are:

[0017] 1. The main components of the chain tensioning device in this solution are only a fixed block, a movable block and a double threaded rod, which makes the structure simpler, can realize the miniaturization of the chain tensioning device, can help to ensure the structural strength, and meet the space usage requirements for the tensioning and adjustment of the chains;

[0018] 2. In addition, the double threaded rod is used in this solution to control the tension or relaxation of the chain, which is easy to operate and reduces the difficulty of operation and the requirements for technicians. BRIEF DESCRIPTION OF THE DRAWINGS

[0019] In order to more clearly illustrate the embodiments of the present invention or the technical solutions in the prior art, the drawings required for use in the embodiments or the description of the prior art will be briefly introduced below.

[0020] Figure 1 It is an exploded structural diagram of the chain tensioning device of this scheme;

[0021] Figure 2It is a cross-sectional structural diagram of the chain tensioner;

[0022] Figure 3 This is a diagram of the chain tensioner in use;

[0023] Figure 4 It is a structural diagram of the coordination between the chain tensioning device, the sliding guide rod and the transmission chain.

[0024] In the figure: 1-sliding seat; 11-groove; 2-fixed block; 21-bump; 22-first connector; 3-locking screw; 4-locking nut; 5-double threaded rod; 6-movable block; 61-second connector; 7-sliding guide rod; 8-transmission chain. DETAILED DESCRIPTION

[0025] The technical solution in this embodiment will be clearly and completely described below in conjunction with the accompanying drawings. The described embodiments are only some of the embodiments, not all of them. Based on the embodiments in this solution, all other embodiments obtained by ordinary technicians in this field without making creative work are within the protection scope of this solution.

[0026] Example 1

[0027] like Figures 1 to 4 As shown, this embodiment designs a chain tensioning device for a cylindrical anchor drilling machine, including a fixed block 2, a movable block 6, a double threaded rod 5 and other components.

[0028] The cylindrical anchor drilling rig includes components such as a transmission chain 8, a sliding guide rod 7 and a sliding seat 1; the sliding seat 1 is in the shape of a tube sleeve and can be slidably sleeved on the sliding guide rod 7; specifically, the cylindrical anchor drilling rig includes two sliding guide rods 7 arranged in parallel with each other, and a sliding seat 1 is arranged on each sliding guide rod 7, and the rotary drive device of the cylindrical anchor drilling rig can be installed on the sliding seat 1 (connected to the two sliding seats 1 by screws); a chain tensioning device is arranged on the relative inner sides of the two sliding seats 1, and the two chain tensioning devices can adjust the tensioning degree of the two chains respectively.

[0029] The fixing block 2 is in the shape of a square, and is provided with a through hole on the fixing block 2. The screws passing through the through hole can fix the fixing block 2 to the outer wall of the sliding seat 1; a groove 11 is provided on the outer wall of the sliding seat 1, and the groove 11 is in the shape of an elongated strip and perpendicular to the sliding direction of the sliding seat 1; a protrusion 21 is provided on the outer wall of the fixing block 2; when the sliding seat 1 is connected to the fixing block 2, the protrusion 21 is engaged with the groove 11, thereby reducing the shear force borne by the screw lock, while improving the stability and structural strength of the connection between the fixing block 2 and the sliding seat 1.

[0030] The transmission chain 8 is parallel to the sliding guide rod 7, and the two transmission chains 8 are arranged on the opposite inner sides of the two sliding guide rods 7. One end of the transmission chain 8 is connected to the movable block 6, and the other end is connected to the fixed block 2; the movable block 6 is provided with a second connector 61 for connecting the transmission chain 8, and the fixed block 2 is provided with a first connector 22 for connecting the transmission chain 8.

[0031] Both ends of the double-threaded rod 5 are provided with external threads with opposite thread directions. The double-threaded rod 5 is parallel to the sliding direction of the sliding seat 1. One end of the double-threaded rod 5 is threadedly connected to the fixed block 2, and the other end is threadedly connected to the movable block 6. When the double-threaded rod 5 is rotated, the distance between the fixed block 2 and the movable block 6 can be adjusted to tighten or loosen the transmission chain 8.

[0032] The first connector 22 and the second connector 61 are both located on the axis of the double-threaded rod 5, thereby reducing the shear force formed by the first connector 22 and the double-threaded rod 5 and the shear force formed by the second connector 61 and the double-threaded rod 5, and improving the stability of the tension borne by the double-threaded rod 5.

[0033] The two ends of the double-threaded rod 5 are respectively a positive thread end and a negative thread end, and the length of the positive thread end is greater than that of the negative thread end; a locking nut 4 is provided on the outer sleeve of the positive thread end, and when the positive thread end is connected to the fixed block 2, the locking nut 4 presses against the end face of the fixed block 2 to lock the relative position of the double-threaded rod 5 and the fixed block 2.

[0034] The fixing block 2 is threadedly connected with a locking screw 3, which is perpendicular to the double-threaded rod 5 and can be pressed against the positive thread end. The movable block 6 is also provided with a locking screw 3, which is perpendicular to the double-threaded rod 5 and can be pressed against the reverse thread end. The locking screw 3 is used to lock the double-threaded rod 5, thereby reducing the self-rotation of the double-threaded rod 5 when subjected to vibration, and effectively ensuring the continuous effect of the chain tension.

[0035] The above embodiments are merely examples for the purpose of clarifying the description, and are not intended to limit the implementation methods; it is not necessary and impossible to list all implementation methods exhaustively. However, obvious changes or modifications derived therefrom are still within the scope of protection of the present technology.

Claims

1. A chain tensioning device for a cylindrical anchor drilling rig, characterized in that: It comprises a fixed block (2), a movable block (6) and a double-threaded rod (5); The cylindrical anchor drilling machine comprises a transmission chain (8), a sliding guide rod (7) and a sliding seat (1); the sliding seat (1) is in the shape of a tube sleeve and can be slidably sleeved on the sliding guide rod (7); The fixed block (2) is fixed on the outer wall of the sliding seat (1); the transmission chain (8) is arranged in parallel with the sliding guide rod (7); one end of the transmission chain (8) is connected to the movable block (6) and the other end is connected to the fixed block (2); both ends of the double-threaded rod (5) are provided with external threads with opposite thread directions; one end of the double-threaded rod (5) is threadedly connected to the fixed block (2) and the other end is threadedly connected to the movable block (6); when the double-threaded rod (5) is rotated, the distance between the fixed block (2) and the movable block (6) can be adjusted to tighten or loosen the transmission chain (8).

2. The chain tensioning device of the cylindrical anchor drilling machine according to claim 1, characterized in that: The movable block (6) is provided with a second connector (61) for connecting to a transmission chain (8), and the fixed block (2) is provided with a first connector (22) for connecting to a transmission chain (8); the first connector (22) and the second connector (61) are both located on the axis of the double-threaded rod (5).

3. The chain tensioning device of the cylindrical anchor drilling machine according to claim 2, characterized in that: The double-threaded rod (5) is parallel to the sliding direction of the sliding seat (1).

4. The chain tensioning device of a cylindrical anchor drilling rig according to claim 1, characterized in that: The outer wall of the sliding seat (1) is provided with a groove (11), which is in a long strip shape and perpendicular to the sliding direction of the sliding seat (1); the outer wall of the fixing block (2) is provided with a protrusion (21); when the sliding seat (1) is connected to the fixing block (2), the protrusion (21) is engaged with the groove (11).

5. The chain tensioning device of a cylindrical anchor drilling rig according to claim 1, characterized in that: The two ends of the double-threaded rod (5) are respectively a positive threaded end and a negative threaded end, and the positive threaded end is longer than the negative threaded end; a locking nut (4) is provided on the outer sleeve of the positive threaded end, and when the positive threaded end is connected to the fixing block (2), the locking nut (4) is pressed against the end surface of the fixing block (2) to lock the relative position of the double-threaded rod (5) and the fixing block (2).

6. The chain tensioning device of a cylindrical anchor drilling machine according to claim 5, characterized in that: A locking screw (3) is threadedly connected to the fixing block (2); the locking screw (3) is perpendicular to the double-threaded rod (5); and the locking screw (3) can be pressed against the positive thread end.

7. The chain tensioning device of a cylindrical anchor drilling machine according to claim 5, characterized in that: The movable block (6) is provided with a locking screw (3), which is perpendicular to the double-threaded rod (5) and can be pressed against the reverse threaded end.

8. The chain tensioning device of a cylindrical anchor drilling rig according to any one of claims 1 to 7, characterized in that: The cylindrical anchor drilling machine comprises two mutually parallel sliding guide rods (7), each of which is provided with a sliding seat (1); and chain tensioning devices are provided on the opposite inner sides of the two sliding seats (1).

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